Acting Chief Constable Becky Riggs, national lead for child protection and abuse investigation, said social media platforms must do more to report crime and stop underage images being shared.
The incidents, which occurred late at night in the city centre park between 30 November and 5 December, are being linked by detectives, who arrested a 32-year-old man on suspicion of assault.
The honour makes for Italy's 21st item on UNESCO's intangible list, joining Neapolitan pizza-making, Sicilian puppet theatre and Cremona's violin craftsmanship.
The Federal Reserve takes US borrowing costs down to a near-three year low, but says it's now taking a more cautious approach - a switch that is unlikely to please the White House.
The FCA's move to hand Zilch a payments services licence is another step towards one of the UK's most prominent fintechs listing its shares on a major stock exchange, Sky News can reveal.